Eat more - try eating six meals a day, small ones. For some people it helps speed up metabolism and stops you feeling hungry.
I believe that should have been eat less but more often, not eat more.
If you can, replace sweets of all kinds (including cakes) with fruits. If you must have a bit of chocolate, have a dark, strong one, with 70% of cocoa (more stronger chocolates than that tend to taste too strong).
Try to lower your fat income - when baking, try using less / no oil, use aluminium foil as a separating layer so your food won't burn (no, it's not supposed to be black, golden brown is usually what you want), try cooked meat instead of fried meat. It can be surprisingly good that way, tender as hell too. If it tastes bland, try adding a bit of grated cheese (not a fatty one, if possible, but enough so that it would taste at least OK).
Avoid adding too much salt (try not adding salt to your dishes at all for four days, then try to go back and you'll be surprised how salty your dishes were).
Also, when you lack time for, say, a full hour or half an hour exercise, but have about 15 minutes in the morning and 15 minutes in the evening, do your exercises at those times.
I might start practising this starting tomorrow, as a 30 minute workout exhausts me too much (need energy for studying, brain's a *****), shorter workouts might energise me even.
If you don't want to go to the gym or you want to save the money, you can do fairly efficient exercises at home.
I should be doing my workout 4 times a week, only 2 days consecutively, though.
My 15 minute workout should looks like this:
- wider stance deep squats (slow when down to keep knees safe)
- reverse back extensions (heels and shoulders on the floor, hands on chest or on the belly)
- crunches followed by reverse crunches or crunches with feet in the air instead of the combo (hands on chest, pharaoh style)
- side crunches, both sides
- isometric upper back exercise - trying to pull legs together agains arms trying to pull them apart (sound like porn, doesn't it
)
- forearm exercises (squeezing a tennis ball or a
rubber ring)
No pauses during or between these unless necessary (it shouldn't be).
Repeat 3 times, first and last time are warm up and calm down series, half of the repetitions of the main, second series.
If I'll be too comfortable with this, I'll switch to supersets in a series, then I'll increase the amount of repetitions.
It's worked well before, but I usually had to stop after a few weeks because of flu or some other crap.
I've just eaten, thanks for that! Pineapple juice will now be banned in our house. Don't want him to be getting any ideas into his head 
